Windows only: Free computer cleaning application AtomicCleaner has the standard roster of cleaning tools like temp file deletion and cookie removal, but goes a step further and includes a cleanup option for gamers. The Gamer Cleanup clears out the sometimes monster-sized temporary gaming cache files. For more ideas on how to speed up your computer and clean out the junk check out our top 10 ways to clean up your computer. AtomicCleaner is a free download for Windows only.